/*-
 * #%L
 * OBKV Table Client Framework
 * %%
 * Copyright (C) 2021 OceanBase
 * %%
 * OBKV Table Client Framework is licensed under Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 * #L%
 */

package com.alipay.oceanbase.rpc.util;

import java.util.Random;

public class RandomUtil {
    public final static Random rand = new Random();

    // min : inclusive
    // bound : exclusive
    public static int getRandomNum(int min, int bound) {
        if (min >= bound) {
            throw new IllegalArgumentException(String.format(
                "min is larger than bound, min:%d, bound:%d", min, bound));
        } else {
            return rand.nextInt(bound - min) + min;
        }
    }
}
